Positioning welding table for electronic instrument maintenance

Abstract

The invention relates to the technical field of electronic instrument maintenance, in particular to a positioning welding table for electronic instrument maintenance, which comprises two underframes and an operating panel, the operating panel is arranged at the upper ends of the two underframes, and angle adjusting and limiting assemblies are arranged at the joints of the operating panel and the two underframes. The angle adjusting and limiting assembly is used for limiting the rotating angle of the operation plate, two supporting columns are fixedly connected to the two sides of the upper end face of the operation plate correspondingly, balls are rotationally connected to the upper ends of the multiple supporting columns correspondingly, an open groove is formed in the middle of the operation plate, and connecting rods are slidably connected to the two ends of the open groove correspondingly. The upper ends of the two connecting rods are fixedly connected with moving plates, the connecting rods are L-shaped, and the lower ends of the two connecting rods are fixedly connected with arc-shaped guide plates. Compared with the prior art, the circuit board clamping device solves the problems that in the prior art, the operation redundancy is high, and the circuit board clamping operation process is tedious.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic instrument maintenance, and particularly to a positioning soldering station for electronic instrument maintenance. Background Art

[0002] In the modern industrial field where the precision and integration of electronic instruments are continuously improving, as the core functional carrier, the circuit board's repair operation poses higher requirements for process precision and operation efficiency. The circuit board integrates a large number of electronic components through surface mount technology or through-hole technology. The solder joints formed between these components and the pads are not only the key nodes for electrical signal transmission but also the weak links in the structural connection. Under long-term use or external stress, the solder joints may exhibit failure phenomena such as solder joint voids, cold soldering, and pad detachment, directly affecting the functional stability of the electronic instrument. Therefore, a positioning soldering station is required to re-solder the detached solder joints on the circuit board.

[0003] During the circuit board repair process, a professional soldering station provides a basic support platform for the soldering operation through its clamping and positioning system. Its core function is to achieve precise positioning and stable clamping of the circuit board to be repaired. In traditional technical solutions, the clamping mechanism of the soldering station generally adopts a displacement control method for the clamping plate driven by a screw drive mechanism. This technical path has a significant bottleneck in operation efficiency: the operator needs to continuously perform multi-turn rotation actions to complete the clamping stroke, and also needs to perform the same amount of reverse operations when releasing the limit state. The inherent operation redundancy characteristics of this mechanical transmission structure directly lead to an excessive time consumption ratio in the clamping / loosening operation process. Especially in high-frequency soldering repair operation scenarios, the accumulated time cost will significantly affect the overall repair efficiency.

[0004] Furthermore, we disclose a positioning soldering station for electronic instrument maintenance to meet the actual needs of high operation redundancy and cumbersome circuit board clamping operation process in the existing technology. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a positioning soldering station for electronic instrument maintenance to solve the problems of high operation redundancy and cumbersome circuit board clamping operation process in the existing technology.

[0006] For the above purposes, the present invention provides a positioning soldering station for electronic instrument maintenance, including two chassis and an operation board. The operation board is arranged at the upper ends of the two chassis, and an angle adjustment limiting component is arranged at the connection between the operation board and the two chassis. The angle adjustment limiting component is used to limit the rotation angle of the operation board. Two support columns are fixedly connected to both sides of the upper end surface of the operation board. Ball rollers are rotatably connected to the upper ends of the plurality of support columns. An opening groove is formed in the middle of the operation board. Connecting rods are slidably connected to both ends of the opening groove. Moving plates are fixedly connected to the upper ends of the two connecting rods. The connecting rods are L-shaped, and arc-shaped guiding plates are fixedly connected to the lower ends of the two connecting rods. A rotating plate is arranged between the two arc-shaped guiding plates at the middle of the lower end of the operation board. A driving structure is arranged on one side of the operation board. The driving structure is used to drive the rotating plate to rotate to complete the rapid approach and separation of the two moving plates.

[0007] Preferably, the angle adjustment limiting component includes a circular ring frame fixedly connected to the upper ends of the two chassis. Circular plates are rotatably connected to the upper ends of the two circular ring frames. The upper ends of the two circular plates are flat and fixedly connected to the operation board.

[0008] Preferably, a plurality of concave holes are evenly spaced at the position of the inner side end surface of the circular plate inside the circular ring frame. A limiting cylinder is fixedly connected to the middle of the inner side end surface of the circular ring frame. The inside of the limiting cylinder is hollow and communicated with the inside of the circular ring frame. A compression spring seat is fixedly connected to one side end surface of the inner wall of the limiting cylinder. A compression head is fixedly connected to the end of the compression spring seat close to the circular plate. One section of the compression head close to the circular plate is conical and inserted into the concave hole. Fillets are formed at the corners of the concave hole.

[0009] Preferably, buffer spring seats are fixedly connected to both ends of the inner side end surface of the moving plate. Clamping plates are fixedly connected to the ends of the two buffer spring seats away from the moving plate.

[0010] Preferably, a contact plate is fixedly connected to the middle of the lower end of the connecting rod. A contact spring seat is fixedly connected to one side end surface of the contact plate. The end of the contact spring seat away from the contact plate is fixedly connected to the circular plate.

[0011] Preferably, guide rods are fixedly connected to both ends of the inner side end surface of the clamping plate close to the moving plate. One ends of the two guide rods penetrate through the moving plate and are slidably connected to the moving plate. Rollers are rotatably connected to both sides of the middle of the lower end of the moving plate. The outer walls of the rollers are in contact with the upper end surface of the operation board. A sliding frame is slidably connected to the lower end of the connecting rod. The upper end of the sliding frame is fixedly connected to the operation board.

[0012] Preferably, a mounting bracket is fixedly connected to the middle of the lower end face of the operation board. A rotating shaft is rotatably connected to the lower end of the mounting bracket. The lower end of the rotating shaft is fixedly connected to a rotating plate. Pulley wheels are rotatably connected to both ends of the rotating plate. The outer wall of the pulley wheel is in contact with the inner wall of the arc-shaped guiding plate.

[0013] Preferably, the driving structure includes a fixed block fixedly connected to one end of the upper side end face of the operation board. An arc-shaped guiding plate is rotatably connected to the middle of the fixed block in a snap-fit manner. A waist-shaped plate is fixedly connected to the upper end of the arc-shaped guiding plate. A limiting rod is slidably connected to one end of the waist-shaped plate away from the limiting rod. A limiting plate is fixedly connected to the upper end of the limiting rod. A connecting plate is fixedly connected to the middle of the outer wall of the limiting rod. A telescopic spring is fixedly connected to the outer side of the upper end face of the connecting plate. The telescopic spring is sleeved on the outer part of the limiting rod and its upper end is fixedly connected to the waist-shaped plate. An annular groove is opened at the upper end of the fixed block. The lower end of the limiting rod is spherical and located inside the annular groove. Limiting holes are opened on both sides of the annular groove. The included angle between the two limiting holes is 180 degrees. The lower end of the limiting rod extends into the limiting hole.

[0014] Preferably, a handle is fixedly connected to one end of the outer wall of the waist-shaped plate away from the limiting rod.

[0015] Preferably, the lower end of the arc-shaped guiding plate penetrates through the fixed block and is drivingly connected to a toothed belt wheel group structure. The end of the toothed belt wheel group structure away from the arc-shaped guiding plate is drivingly connected to the rotating shaft.

[0016] Advantages of the present invention:

[0017] 1. For the positioning soldering station for electronic instrument maintenance, a driving structure is provided. The driving structure realizes the quick start and stop control of the clamping state through lever transmission and an elastic positioning mechanism. The operator only needs to complete a 180° handle rotation action with one hand, and can drive the rotating plate to rotate synchronously through the toothed belt wheel group transmission system, and then drive the link mechanism to complete the in-phase / opposite movement of the clamping plate. This transmission chain adopts a pure mechanical limiting structure. When the handle rotates to the working position, the limiting rod automatically snaps into the corresponding hole of the annular groove to form a rigid lock, making the switching process between the clamping / releasing states have a clear force feedback characteristic. This design completely abandons the repeated rotation operation required by the traditional screw drive, significantly shortens the auxiliary working hours, enables the maintenance personnel to focus more on the soldering operation itself, and thus greatly improves the overall operation efficiency of circuit board maintenance.

[0018] 2. The positioning soldering station for electronic instrument maintenance realizes multi-dimensional angle adjustment and rigid limiting functions of the operation board through an elastic extrusion mechanical positioning structure. This component adopts an embedded design of a conical extrusion head and an array of concave holes, enabling the operation board to adjust the angle. At the same time, the spring pre-tightening force maintains a stable contact pressure, ensuring that the circuit board remains at the set angle without deviation during the soldering operation. This mechanical limiting method can not only meet the perspective adjustment requirements for precision component maintenance but also significantly improve the operation convenience of complex circuit board maintenance operations. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0020] Figure 1 Schematic three-dimensional structure diagram of the present invention;

[0021] Figure 2 Schematic three-dimensional structure diagram of the driving structure of the quick clamping component of the present invention;

[0022] Figure 3 Schematic partial three-dimensional structure diagram of the clamping component of the present invention;

[0023] Figure 4 Schematic three-dimensional installation diagram of the clamping component and the driving structure of the present invention;

[0024] Figure 5 Schematic three-dimensional structure diagram of the angle adjustment and limiting component of the present invention;

[0025] Figure 6 Schematic three-dimensional structure diagram of the circular plate of the present invention;

[0026] Figure 7 Schematic three-dimensional internal structure diagram of the angle adjustment and limiting component of the present invention.

[0027] The labels in the figure are:

[0028] 1. Chassis; 2. Ring frame; 3. Circular plate; 4. Operation panel; 5. Open slot; 6. Support column; 7. Ball; 8. Clamping plate; 9. Moving plate; 10. Fixed block; 11. Rotating plate; 12. Arc-shaped guiding plate; 13. Limit hole; 14. Waist-shaped plate; 15. Handle; 16. Limit rod; 17. Connecting plate; 18. Telescopic spring; 19. Limit plate; 20. Toothed belt pulley group structure; 21. Roller; 22. Guide rod; 23. Buffer spring seat; 24. Connecting rod; 25. Sliding frame; 26. Contact plate; 27. Contact spring seat; 28. Mounting frame; 29. Rotating shaft; 30. Pulley; 31. Limit cylinder; 32. Concave hole; 33. Extrusion spring seat; 34. Extrusion head; 35. Ring groove. Detailed implementation manner

[0029] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in combination with specific embodiments.

[0030] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0031] As Figures 1 to 7 shown, a positioning soldering station for electronic instrument maintenance includes two chassis 1 and an operation panel 4. The operation panel 4 is arranged at the upper ends of the two chassis 1, and an angle adjustment limit component is arranged at the connection between the operation panel 4 and the two chassis 1. The angle adjustment limit component is used to limit the rotation angle of the operation panel 4. Two support columns 6 are fixedly connected to both sides of the upper end surface of the operation panel 4. Balls 7 are rotatably connected to the upper ends of the multiple support columns 6. An open slot 5 is opened in the middle of the operation panel 4. Connecting rods 24 are slidably connected to both ends of the open slot 5. Moving plates 9 are fixedly connected to the upper ends of the two connecting rods 24. The connecting rods 24 are L-shaped, and arc-shaped guiding plates 12 are fixedly connected to the lower ends of the two connecting rods 24. A rotating plate 11 is arranged between the two arc-shaped guiding plates 12 at the middle of the lower end of the operation panel 4. A driving structure is arranged on one side of the operation panel 4. The driving structure is used to drive the rotating plate 11 to rotate to complete the rapid approaching and separating of the two moving plates 9.

[0032] The positioning soldering station for electronic instrument maintenance adopts a modular structure design. With the double chassis 1 as the support foundation, the multi-dimensional angle adjustment of the operation board 4 is realized through the rotating pair mechanism of the circular ring frame 2 and the circular plate 3. Cooperating with the elastic limiting component composed of the conical extrusion head 34 and the array of concave holes 32, it ensures that the circuit board maintains a set angle without deviation during the soldering operation. The ball array 7 on the surface of the operation board 4 and the rollers 21 at the bottom of the moving board 9 form a double guiding system. Cooperating with the precise constraint of the guide rod 22 on the movement track of the clamping plate 8, the stable displacement of the clamping mechanism is realized. Its core driving structure converts the rotational movement of the handle 15 into the synchronous rotation of the rotating plate 11 through lever transmission and the toothed belt pulley group, and then drives the connecting rod 24 mechanism to complete the in-phase / opposite movement of the clamping plate 8. Cooperating with the rigid locking system formed by the 180-degree rotation limiting mechanism and the spring pre-tightening device, the clamping / release state switching has a clear force feedback characteristic. The double-sided elastic constraint system composed of the buffer spring seat 23 and the contact spring seat 27 effectively prevents overpressure damage to precision components while ensuring the clamping reliability. Through the composite design of mechanical transmission and elastic buffering of each component, the operation efficiency and process precision of the circuit board maintenance operation are significantly improved.

[0033] Furthermore, as Figures 5 to 7 shown, the angle adjustment limiting component includes a circular ring frame 2 fixedly connected to the upper ends of the two chassis 1. The upper ends of the two circular ring frames 2 are both rotatably connected with a circular plate 3. The upper ends of the two circular plates 3 are both flat and fixedly connected to the operation board 4. A plurality of concave holes 32 are evenly spaced at a position on one side end face of the circular plate 3 inside the circular ring frame 2. The middle of one side end face of the circular ring frame 2 is fixedly connected with a limiting cylinder 31. The inside of the limiting cylinder 31 is hollow and communicates with the inside of the circular ring frame 2. One side end face of the inner wall of the limiting cylinder 31 is fixedly connected with an extrusion spring seat 33. One end of the extrusion spring seat 33 close to the circular plate 3 is fixedly connected with an extrusion head 34. The section of the extrusion head 34 close to the circular plate 3 is conical and inserted into the concave hole 32. Fillets are provided at the corners of the concave hole 32;

[0034] The component adopts a rotating secondary structure of a double circular ring frame 2 and a circular plate 3. The lower end surface of the circular plate 3 forms a spherical contact with the upper end surface of the circular ring frame 2, so that the operating plate 4 can be continuously rotated and adjusted around the horizontal axis. In the design of the limit mechanism, the extrusion spring seat 33 in the limit cylinder 31 is used to provide axial preload force to drive the conical extrusion head 34 to always maintain a radial compression state on the side end surface of the circular plate 3. When the operating plate 4 is rotated to a preset angle, the conical end of the extrusion head 34 forms a chimeric fit with the concave holes 32 evenly distributed on the side end surface of the circular plate 3, and the angle locking is achieved through multi-point mechanical engagement. Through the angle adjustment limit assembly, the staff can conveniently adjust the angle of the operating plate 4 according to the welding work requirements, thereby completing the welding angle adjustment of the circuit board, and the cooperation between the extrusion head 34 and the concave hole 32 makes it less likely to shake, thereby increasing the welding stability.

[0035] Further, such as Figures 1 to 4 As shown, both ends of one end surface of the moving plate 9 are fixedly connected with a buffer spring seat 23, and one end of the two buffer spring seats 23 away from the moving plate 9 is fixedly connected with the clamping plate 8, and the middle part of the lower end of the connecting rod 24 is fixedly connected with a contact plate 26, and one end surface of the contact plate 26 is fixedly connected with a contact spring seat 27, and one end of the contact spring seat 27 away from the contact plate 26 is fixedly connected to the circular plate 3, and both ends of the end surface of the clamping plate 8 close to the moving plate 9 are fixedly connected with guide rods 22, and one end of the two guide rods 22 penetrates the moving plate 9 and slides with the moving plate 9 The middle part of the lower end of the movable plate 9 is rotatably connected with rollers 21 on both sides, the outer wall of the roller 21 contacts the upper end surface of the operating plate 4, the lower end of the connecting rod 24 is slidably connected with a sliding frame 25, the upper end of the sliding frame 25 is fixedly connected with the operating plate 4, the middle part of the lower end surface of the operating plate 4 is fixedly connected with a mounting frame 28, the lower end of the mounting frame 28 is rotatably connected with a rotating shaft 29, the lower end of the rotating shaft 29 is fixedly connected with the rotating plate 11, and both ends of the rotating plate 11 are rotatably connected with pulleys 30, and the outer wall of the pulley 30 contacts the inner wall of the arc-shaped guide plate 12;

[0036] The clamping mechanism of this positioning soldering station adopts a combined design of link 24 transmission and elastic buffering to achieve rapid and stable clamping of the circuit board: The driving structure drives the rotating plate 11 to rotate through the rotating shaft 29. The pulleys 30 at both ends of the rotating plate 11 form rolling contact with the inner wall of the arc-shaped guiding plate 12, converting the rotational motion into the horizontal displacement of the link 24. When the link 24 slides directionally along the sliding frame 25, it drives the moving plate 9 to move synchronously. The lower roller 21 of the moving plate 9 contacts the surface of the operating plate 4 to form a rolling support, effectively reducing the moving friction resistance. The moving plate 9 is connected to the clamping plate 8 through the buffer spring seat 23, and uses the spring deformation characteristic to achieve flexible transmission of the clamping force. With the guiding effect of the guide rod 22 on the movement track of the clamping plate 8, it ensures that the clamping plate 8 always maintains a parallel displacement state; when the clamping plate 8 contacts the circuit board, the buffer spring seat 23 provides an axial buffer amount to avoid rigid impact. At the same time, the abutting spring seat 27 applies a reverse pre-tightening force to the link 24 through the abutting plate 26, forming a two-way elastic constraint mechanism, which not only ensures the clamping reliability but also prevents overpressure from damaging the circuit board. The coordinated action of each structure realizes the unity of the clamping action with rapid start and stop and the protection function of precision components.

[0037] Further, as Figures 1 to 4 shown, the driving structure includes a fixed block 10 fixedly connected to one end of the upper side end face of the operating plate 4. The middle of the fixed block 10 is snap-fitted and rotatably connected with an arc-shaped guiding plate 12. The upper end of the arc-shaped guiding plate 12 is fixedly connected with a waist-shaped plate 14. One end of the waist-shaped plate 14 is slidably connected with a limiting rod 16. The upper end of the limiting rod 16 is fixedly connected with a limiting plate 19. The middle part of the outer wall of the limiting rod 16 is fixedly connected with a connecting plate 17. The outer side of the upper end face of the connecting plate 17 is fixedly connected with a telescopic spring 18. The telescopic spring 18 is sleeved outside the limiting rod 16 and its upper end is fixedly connected with the waist-shaped plate 14. The upper end of the fixed block 10 is provided with an annular groove 35. The lower end of the limiting rod 16 is spherical and located inside the annular groove 35. Both sides of the annular groove 35 are provided with limiting holes 13. The angular interval between the two limiting holes 13 is 180 degrees. The lower end of the limiting rod 16 extends into the limiting holes 13. One end of the outer wall of the waist-shaped plate 14 away from the limiting rod 16 is fixedly connected with a handle 15. The lower end of the arc-shaped guiding plate 12 penetrates through the fixed block 10 and is drivingly connected with a toothed belt wheel group structure 20. The end of the toothed belt wheel group structure 20 away from the arc-shaped guiding plate 12 is drivingly connected with the rotating shaft 29;

[0038] The driving structure adopts a composite mechanism of lever transmission and elastic positioning to achieve precise driving of the clamping mechanism: when the operator applies a rotational torque through the handle 15, the waist-shaped plate 14 drives the arc-shaped guiding plate 12 to rotate about the fixed block 10 in a fixed-axis manner. The lower end of the arc-shaped guiding plate 12 transmits the rotational motion to the rotating shaft 29 through the toothed pulley group structure 20, driving the rotating plate 11 to rotate synchronously; when the handle 15 rotates to the working position, the spherical head at the lower end of the limiting rod 16 automatically snaps into the corresponding limiting hole 13 of the annular groove 35 under the action of the telescopic spring 18, forming a rigid lock through mechanical engagement. At this time, the rotating plate 11 converts the rotational motion into the horizontal displacement of the connecting rod 24 through the contact and cooperation with the arc-shaped guiding plate 12 via the pulley 30, and finally drives the clamping plate 8 to complete the clamping action. When operating in the reverse direction, only a slightly larger torque needs to be applied to make the limiting rod 16 compress the telescopic spring 18 and withdraw from the limiting hole 13, and through the rotation control of the handle 15, a rapid switching between the clamping and releasing states is achieved. The entire transmission chain adopts a pure mechanical structure, ensuring that the operation process has a clear force feedback and state holding function.

[0039] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0040] The present invention aims to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A positioning welding station for electronic instrument maintenance, characterized in that: The invention comprises two base frames (1) and an operating panel (4), wherein the operating panel (4) is arranged at the upper ends of the two base frames (1), and an angle adjustment limit assembly is arranged at the connection between the operating panel (4) and the two base frames (1), and the angle adjustment limit assembly is used to limit the rotation angle of the operating panel (4), two support columns (6) are fixedly connected to both sides of the upper end surface of the operating panel (4), and the upper ends of the plurality of support columns (6) are rotatably connected to balls (7), and an opening groove (5) is opened in the middle of the operating panel (4), and the opening groove Both ends of the operating plate (5) are slidably connected with connecting rods (24), the upper ends of the two connecting rods (24) are fixedly connected with the movable plate (9), the connecting rod (24) is L-shaped, and the lower ends of the two connecting rods (24) are fixedly connected with the arc-shaped guide plate (12), a rotating plate (11) is arranged between the two arc-shaped guide plates (12) at the middle of the lower end of the operating plate (4), and a driving structure is arranged on one side of the operating plate (4), and the driving structure is used to drive the rotating plate (11) to rotate to complete the rapid approach and separation of the two movable plates (9).

2. The positioning soldering station for electronic instrument maintenance according to claim 1, characterized in that: The angle adjustment limit assembly comprises a circular frame (2) fixedly connected to the upper ends of two base frames (1), the upper ends of the two circular frames (2) are rotatably connected to circular plates (3), and the upper ends of the two circular plates (3) are both flat and fixedly connected to the operating panel (4).

3. The positioning soldering station for electronic instrument maintenance according to claim 2, characterized in that: A plurality of concave holes (32) are evenly spaced apart at an end surface of one side of the circular plate (3) at a position inside the circular ring frame (2); a limiting cylinder (31) is fixedly connected to the middle of an end surface of one side of the circular ring frame (2); the interior of the limiting cylinder (31) is hollow and communicates with the interior of the circular ring frame (2); an extrusion spring seat (33) is fixedly connected to an end surface of an inner wall of the limiting cylinder (31); an extrusion head (34) is fixedly connected to one end of the extrusion spring seat (33) close to the circular plate (3); a section of the extrusion head (34) close to the circular plate (3) is conical and inserted into the concave hole (32); a rounded corner is provided at the corner of the concave hole (32).

4. The positioning soldering station for electronic instrument maintenance according to claim 1, characterized in that: Both ends of one end surface of the movable plate (9) are fixedly connected to buffer spring seats (23), and one end of the two buffer spring seats (23) away from the movable plate (9) is fixedly connected to a clamping plate (8).

5. The positioning soldering station for electronic instrument maintenance according to claim 4, characterized in that: A contact plate (26) is fixedly connected to the middle of the lower end of the connecting rod (24), a contact spring seat (27) is fixedly connected to one end surface of the contact plate (26), and one end of the contact spring seat (27) away from the contact plate (26) is fixedly connected to the circular plate (3).

6. The positioning soldering station for electronic instrument maintenance according to claim 5, characterized in that: Both ends of the end surface of one side of the clamping plate (8) close to the movable plate (9) are fixedly connected with guide rods (22), one end of each of the two guide rods (22) penetrates the movable plate (9) and is slidably connected to the movable plate (9), both sides of the middle part of the lower end of the movable plate (9) are rotatably connected with rollers (21), the outer wall of the roller (21) contacts the upper end surface of the operating plate (4), the lower end of the connecting rod (24) is slidably connected with a sliding frame (25), and the upper end of the sliding frame (25) is fixedly connected to the operating plate (4).

7. The positioning soldering station for electronic instrument maintenance according to claim 6, characterized in that: A mounting frame (28) is fixedly connected to the middle of the lower end surface of the operating panel (4), and a rotating shaft (29) is rotatably connected to the lower end of the mounting frame (28). The lower end of the rotating shaft (29) is fixedly connected to the rotating plate (11), and pulleys (30) are rotatably connected to both ends of the rotating plate (11), and the outer wall of the pulley (30) contacts the inner wall of the arc-shaped guide plate (12).

8. The positioning soldering station for electronic instrument maintenance according to claim 1, characterized in that: The driving structure comprises a fixed block (10) fixedly connected to one end of an end surface of one side of the operating panel (4); the middle part of the fixed block (10) is rotatably connected to an arc-shaped guide plate (12); the upper end of the arc-shaped guide plate (12) is fixedly connected to a waist-shaped plate (14); one end of the waist-shaped plate (14) is slidably connected to a limit rod (16); the upper end of the limit rod (16) is fixedly connected to a limit plate (19); the middle part of the outer wall of the limit rod (16) is fixedly connected to a connecting plate (17); A telescopic spring (18) is fixedly connected to the outer side of the upper end surface. The telescopic spring (18) is sleeved on the outside of the limiting rod (16) and the upper end is fixedly connected to the waist plate (14). An annular groove (35) is provided at the upper end of the fixing block (10). The lower end of the limiting rod (16) is spherical and located inside the annular groove (35). Limiting holes (13) are provided on both sides of the annular groove (35). The interval angle between the two limiting holes (13) is 180 degrees. The lower end of the limiting rod (16) extends into the inside of the limiting hole (13).

9. The positioning soldering station for electronic instrument maintenance according to claim 8, characterized in that: One end of the outer wall of the waist-shaped plate (14) away from the limiting rod (16) is fixedly connected to a handle (15).

10. The positioning soldering station for electronic instrument maintenance according to claim 9, characterized in that: The lower end of the arc-shaped guide plate (12) passes through the fixed block (10) and is transmission-connected to a toothed belt wheel set structure (20); one end of the toothed belt wheel set structure (20) away from the arc-shaped guide plate (12) is transmission-connected to a rotating shaft (29).

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